Exeecising device



I. i. AYD.

EXERCISING DEVI-CE.

APPLICATION FILED JUNE is. 1919.

Patented Dec. 23, 1919.

EXERCISINGVDEVICE.

Application filed June 18, 1919.

To all whom it may concern:

Be it known that I, IcNATIUs J. AYD, a citizen of the United States ofAmerica, residing at Baltimore, State of Maryland, have invented new anduseful Improvements in Exercising Devices, of which the following is aspecification.

he purpose of the invention is to provide an exercising devicesimulating in form the dumb-bell, the device comprising a relativelylong bar with hollow spherical cas-' ings carried at its ends, each ofthese casings being in the form of two hemispherical sections. The baris, also designed to carry a plurality of disks at each end and thedisks are of-such a character that they may be mounted on the bar andinclosed within the casings, the object being to vary the weight of thedevice at its ends by increasing or reducing the number of disksinclosed within the casings. The disks carried in each casing comprise aset and the whole set, when arranged side by side on the bar, forms aspherical conformation so that they may be snugly inclosed within thecasing. Each disk is therefore a segment of the sphere and this beingthecase, the outermost'disks of the set may be removed to decrease theweight at that end of the bar and the disks remaining will be precludedfrom longitudinal movement because of contact with the inside walls ofthe casing which incloses them.

A further purpose of the invention is to provide a device of thecharacter above mentioned which is simple in construction, durable andeffective in operation and inexpensive to manufacture.

To illustrate and describe the invention a specific embodiment thereofis adhered to, but to this embodiment the invention is not to berestricted. The right is reserved to make such changes or alterations ascontinued use in practice may show to be desirable in so far as suchchanges or alterations are compatible in spirit with the annexed claims.

In the accompanying drawings:

Figure 1 is a view partly in elevation and partly in section showing theimproved device.

Fig. 2 is an end view of the structure of Fig.1. 7

Fig. 3 is 'a plan view of one of the disks carried by the bar and housedwithin the spherical casing.

As shown, the invention comprises a bar Specification of Letters Patent.

' the bar nib lflush with the outer surface of the- Patented Dec. 23,1919. Serial no. 305,152.

1 which is preferably circular in cross section and which is formed withthreaded ends engaged by the nuts 2. A keyway is cut in the bar at eachend and these keyways eX- tend from the terminals of the bar a specifieddistance toward the longitudinal center of the bar, each keywayterminating in a right-angled shoulder so that the keys 3 which areplaced in the keyway may abut these shoulders at one end and have theirother end abutting the nuts 2, so that longitudinal movement of the keysis precluded.

Each key 3 is formed at that end adjacent the shoulder with a nib orshoulder of its own, 4.

A spherical casing is carried at each end of the bar and the diameter ofthis casing is equal or substantially equal to the length of the key 3.The casing is formed in two hemispherical sections 5 and 6, both ofthese sections being formed with central eyes through which the bar 1passes and the section 5 is recessed adjacent the eye to provide a seatin which the nib 4 of the key 8 may rest, so that section 5 may beprecluded from movement toward the longitudinal center of and yet leavethe outer edge ofthe section 5. The section 5 is formed with an annularnib 7 which defines a flange surrounding the corresponding end of thesection 6 when the two sections are secured together, as they will bewhen both are placed on the bar 1 and the nut 2 is set down against thesection 6. It is apparent that the construction just described providesfor mounting the spherical casing on the bar so that it may be precludedfrom both longitudinal and angular movement on the bar when the nut 2 isattached, the eyes formed in the two hemispherical sections beingobviously slotted so that the two sections may be passed over the key aswell as the bar.

The design provides for the carrying of a plurality of disks 8 withinthe spherical casing and the whole set carried in either casing are ofsuch a shape that when assembled side by side on the bar they have theshape of a sphere. Each disk therefore has a shape of a segment of thesphere which the whole set forms the central disk being obviously of thelargest diameter and those on either side gradually decreasing indiameter to the two outside disks which are of the smallest diameter.Each disk 7 is formed with an eye 10 and a keyway 9 so that they may bemounted upon the bar and engaged by the key 3. The key prevents angularmovement of the disks and when the whole set are assembled on the barlongitudinal movement of them is perforce precluded.

The greatest weight is had when the whole set are inclosed within thespherical casing. Desiring to reduce the weight, the nut 2 is removed,when the outer section 6 of the easing may be readily removed, the outerof the smallest disk 7 may be then removed and the section 6 replaced.The weight of the device is then reduced to the weight of the smallestdisk 3 removed from either end. But with the removal of this smallestdisk and the replacing of the section 6 the partial set of disks carriedin each casing is securely held therein and precluded from longitudinal}movement along the bar because that disk which was adjacent to the oneremoved now abuts the inner wall of the casing instead of the disk whichwas previously adjacent thereto. Hence, it is seen that with the removalof one of the disks, the casing is employed to hold the partial set ofdisks in the same intimate contact as they were held when the set waswhole. It is obvious that it is desirable to have the disks mounted sothat they may not slide along the bar. Were this possible and were onlyone disk carried in the casing, that disk might slide from one side ofthe casing to the other and would obviously cause a variation in weightat the end of the bar when the latter is in use.

The system of reducing the weight by the removal of the disks 8constitutes the removal of the outermost disks 7 and greatly reduces theweight by. removing the next succeeding disk, until finally the smallestweight is had by removing all the disks and leaving only the centraldisk within the casing and this will obviously be held againstlongitudinal movement along the bar when the two sections of the casingare attached.

Of course, the device may be still further reduced in weight by theremoval of this central disk, leaving only the casing to provide theweight at the ends of the device.

The invention having been described, what is claimed as new and usefulis:

An exercising device, comprising a bar, keys set in the bar adjacent itsends and extending in the direction of the length thereof, those ends ofthe keys remote from the ends of the bar being formed with nibs, casingscomprising two hemispherical sections,

each of which are formed with eyes and keyways to permit them beingmounted on the bar and engaged by one section of the key, one section ofeach casing being slotted to form a seat for the nib of its attendantkey,

nuts threadingly engaged with the terminalsof the bar and bearingagainst the other sections of the casings, and a plurality of disksformed with eyes and keyways and mounted upon the bar within the casingso that they may be precluded from both angular and longitudinalmovement on the bar, the disks being individually removable for theuseful purpose specified.

In testimony whereof I affix my signature.

IGNATIUS J. AYD.

